What is God's Righteousness?

Definition of “righteousness” https://www.merriam-webster.com/dictionary/righteousness

1: acting in accord with divine or moral law : free from guilt or sin

2: morally right or justifiable

Romans 10:1-3 Brethren, my heart's desire and prayer to God for Israel is, that they might be saved. For I bear them record that they have a zeal of God, but not according to knowledge. For they being ignorant of God's righteousness, and going about to establish their own righteousness, have not submitted themselves unto the righteousness of God.